Grumpy baby...

My once-easy-to-please baby has turned into such a grump! She used to play very well independently, and I could leave the room if I needed to run and grab something or use the bathroom. Now everything sets her off. She follows me around crying. She can’t walk yet without assistance, but is getting close. She seems suddenly easily frustrated, easily upset, but when I pick her up, she just wants down... and then she screams. Technically she’s not supposed to be in a leap right now, so I’m confused as to what’s going on! Anyone else?